Moebius FS-1 Build

[u-33]

That looks just like a

That looks just like a goldfish...

I have a friend who'd enjoy chasing that!!





Rich

[boss subfixer]

It might be better than

It might be better than some of that Roadkill from Tony, right Boss? BD.

[bigdave]

Just an update on my

Just an update on my FS-1 build. I did not want you guys to think I gave up!!
Basically I am waiting for my next shot at the pool for more testing.
I did make some simple changes.
I replaced the nozzle servos with stronger metal gear BB ones of the same type. I also spaced them a little wider so I could fit a different R/X that is not prone to reception problems.
I added a rear hold down for the top too as I noticed it was lifting a bit.
So now I have four screws CI!!
It still only takes me about 20 seconds to open her up.
I do still have to get a better way to hold on the top hatch as it popped off doing a outside loop!!
I am thinking stronger magnets. BD.

[crazy ivan]

So now I have

So now I have four screws CI!!
It still only takes me about 20 seconds to open her up.

I'll bring my stopwatch.

Til then, while you've been cleaning out the fastener department at Home Depot, I've been concentrating on the more important aspects of my own conversion. Like finding just the right shade of Schoolbus Yellow to paint the lower Docking Collar Insert. Four screws indeed! Sheesh.

[bigdave]

You have made me see

You have made me see the error of my ways my crazy (Ivan) friend.
I guess it is more important to pick the correct color than to keep the top securely on the sub.

BD.

[bigdave]

Well changes were made and

Well changes were made and the FS-1 hit the pool for the second time.
I still have big trim issues to sort out.
The new receiver worked very well as did the stronger nozzle servos.
I did not get enough foam into the upper area though and she still wanted to flip over on her back. The throttle seems to be very touchy and comes on in a burst and sends the sub off in any direction before I can get control.
I may have to scrap the brushless motors for brushed motors with better low speed priority.
I am not very happy with my progress so far. O well!! BD.

[seahorse]

Hang in there BD, we

Hang in there BD, we are all standing behind you on this one. Well, not exactly right behind you!!! Ha !

[crazy ivan]

Well Paul, at least the

Well Paul, at least the problem of the hull separating has been solved.

[tsenecal]

Dave,

what are you using for

Dave,

what are you using for speed controls on the brushless motors?

[bigdave]

Nice CI!! http://www.subcommittee.com/forum/icon_lol.gif http://www.subcommittee.com/forum/icon_lol.gif
I

Nice CI!!
I am using Castle Mamba. BD.

[seahorse]

CI, looks like that will

CI, looks like that will do the trick for BD. I'm waiting for Dave to pull back on the stick and fly that sub right out of the YMCA pool like he did his dolfin!!!

[Guest]

You can adjust the throttle

You can adjust the throttle curve on Mamba's. Also you can adjust the timing, which should be set to high for outrunner type motors.

I really recommend the castlelink adapter and software (the software is a free download). It makes setting up the controllers a breeze, and you'll be able to adjust the throttle curve graphically with the software.

Andy

[bigdave]

My cousin told me the

My cousin told me the same thing. He has one of the adapters. I will try that. Thanks. BD.

[Guest]

One other thing, do you

One other thing, do you know how many poles the motor's have?

[bigdave]

It is an 8 pole

It is an 8 pole motor.
Here are the specs. BD

No. of Cells: 2 - 3 Li-Poly
6 - 10 NiCd/NiMH
Kv: 3500 RPM/V
Max Efficiency: 79%
Max Efficiency Current: 10 - 27A (>75%)
No Load Current: 1.0A @10V
Resistance: 0.050 ohms
Max Current: 30A for 60S
Max Watts: 250W
Weight: 66.2 g / 2.34 oz
Size: 27.8 mm x 33.3 mm
Shaft Diameter: 3.2mm
Poles: 8
Model Weight: 14 - 25 oz